Apparatus for producing edged work



July 7, 1925.

4 Sheets-Sheet 1 Filed Dec. 1922 July 7, I925.

Filed Dec. 9, 1922 4 Sheets-Sheet R. RYCHIGER ET AL APPARATUS FOR PRODUCINC EDGED WORK July 7, 1925.

Filed Dec. 9', 1922 4 Sheets-Sheet 5 July 7, 1925. 1,544,685

R. RYCHIGER ET AL APPARATUS FOR PRODUCING EDGED WORK Patented July '7, 1925.

UNITED STATES ear-Eur OFFICE.

mmorr RYCHIGER ANDY mesa serum, or srurrisnunc, SWITZERLAND.

'APPARATUs Eon rnonuomennenn WORK.

Application medimeember 9, 1922 Serial 'No. 605,833.

filed applications in Germany, 15th Dec,

1921, and Italy, 2nd January, 1922, France, 4th May, 1922, and Switzerland, 26th April, 1922), of which the following is a. spec1fication. V

Our invention relates to apparatus for producing edged wofl: pieces by turning, boring, shaping, milling andgrinding to a pattern. The apparatus, according to our invention, is provided with a pattern holder, a copying lever to cooperate with the pattern held by the said pattern holder and adapted to be oscillated thereby. and mechanism, whereby the oscillating movements of the said copying lever are transmitted to a tool-holder operating on the -work-.-pieoe. The said mechanism comprises slides and connecting rods, the latter forming a parallelogram-like connection between the copying lever and the tool-holder.

In. the accompanying drawings which show by way of example one construction of the improved apparatus,

Fig. 1 is an elevation of'theapparatus,

Fig.2 a plan, 2

Fig. .3 a section on line A.-A of F g. 2,

Fig.4 a section on line B-B of 2, Fig. 5a section on lineC.-C of Fig. 2,

Fig. 6 an end view seen from the left hand side of Fig. 1 or 2, while Fig. 7 shows a detail insection.

Upon the longitudinal frame member 1 of the latheis slidably mounted a longitudinal slide 3 which is driven by the spindle 2. The slide 3 is provided with two transversely arranged guides 4 and a further transverse guide rail 5-. A cross slide 6 is adapted to-be reciprocated upon the guide rails 4, whilst the tool'slizde 7 is'adapted to bereciprocatedupon the: guiderail 5. Into a transverse slot -8 of the, longitudinal slide 3 projects a nose or projection 8 provided upon the-under face of the cross shde 6. Into this projection is screwed the end of the rod 9 which projects outwardly through a suitable bore of the slide 3 and carries a spiral. spring 10 interposed between the nose or projection 8 and the slide 3. Upon the cross slide 6 is mounted an upright bearing 11 which is providediwitli a lateral extension or arm-:12. The extension 12 carries a pivot 13 upon which is rotatably mounted a roller .14. This roller 14 is pressed by the Spiral spring acting upon the slide 3, against the periphery of a square pattern 15 which is fixedly mounted upon the machine fspi'ndle 16 and carries upon its front face four studs 17. The corners of the" pattern 15 and the corresponding corners of the studs 17 are concentrically rounded off. A one-armed copying lever 19' is pressed by a tension spring 20 acting upon its lower end against the stud 17 adjacent thereto at the time being. The copying lever 19 is fixedlyniounted by means of its hub 21 upon a shaft 22. This shaft/is supported in the upright bearing 11 and. inanother upright bearing 23 integral with the cross slide 6.- Upon the other end of the shaft 22 is fixedly mounted a guide plate 24by means of its hub'25; The guide plate 24 is provided with a dove-tail shaped guidebar 26 upon which is movably mounted a slide 27. Fast to the slide 27 are two pivot bolts 28 to which are pivoted two connecting rods 29, 30. These rods are secured upon the bolts 28 by means i of screw nuts 31 (Fig. 1); Theconnecting rods 29,30 are connected to "the two arms of a two-armed lever 32. The end portions of this lever 32 are provided with'eyes 33 in each of which is mounted a turnable pivot bolt 34 7). The bolts 34 are provided with reduced threaded'portions 35 which pass through longitudinal slots'39 of the rods 29 and 30 respectively.- Upon each threaded portion 35 is'provideda screw nut 37 with a washer 38. The rods 29,30 are fixed to the pivot bolts 34 bynieansof the nuts 37 The two-armed lever 32 is fixedly mounted by means of its hub 39 upon a shaft 40. This shaft rests in two upright bearings 41 integral withio'r fixed to the tool slide 7, and carries upon its end a guide plate 42. With a longitudinal groove (not shown in the drawings) of the guide plate 42' engages a guide bar 44 of the tool holder a groove of the tool holder and is secured by means of a clamping plate 46.

The cross slide 6 is connected with the tool slide 7 by means of a two-armed lever 48. For this purpose, a forwardly projecting arm or extension 49 is provided upon the upright bearing 11. Upon this arm 49 is rotatably'mounted a guide plate 50 by means of a pivot bolt 51. With the guide plate 51 engages a lever 48. The other end of this lever engages with a slotted gulde plate 52 which is pivotally mounted by means of a pivot 53 in an eye 54 formed at the end of a bar 54 fixed to the tool slide 7. This bar 54 is provided with a longitudinal slot 55 and is secured to the slide by means of two screws 56 so that it may be adjusted in its longitudinal direction. The two armed lever 48 is pivotally mounted upon a vertical pivot 57. This pivot is arranged upon a support 58 which may be adjusted within a longitudinal slot 59 of the slide 3. The adjustment of the pivot 57 is effected by means of a screw spindle 6O passing through the bore of the support 58 and adapted to be actuated by means of a hand wheel 61.

The operation is as follows The pattern 15 rotates in the direction of the arrow 15, presses against the roller 14 and causes the cross slide 6 to reciprocate in the direction of the arrows 62 the distance 63 (Fig. 3). The transverse movement of the slide 6 is transmitted by the two-armed lever 48 to the tool slide 7 At the same time the copying lever 19 is oscillated in the direction of the arrows 64 (Fig. 3). The oscillations ofthe copying lever 19 are transmitted by the shaft 22 to the slide 27 and from this slide to the twoarmed lever 32, and through the shaft 40 to the tool holder 43.

The transverse movement of the tool slide 7 may be made greater or less than the movement of the cross slide 6 by suitable adjustment of the pivot 57. In the illustrated construction the cross movements of the tool slide 7 and the cross slide 6 are in the proportion of 2:3.

The same proportion obtains also between the length of the tool lever arm, that is, the distance of the cutting edge of the out ter 47, and the axis of rotation of the shaft 40, and the vertical distance 65 b tween the axis of rotation of the shaft 22 and the pattern 65 (Fig. Owing to this adjustment of the apparatus, the length of each side of the square work piece 66 is only two-thirds of the length of the pattern square 65.

The workpiece is fixed to a disc 67 fixedly mounted upon the machine spindle 16. The latter is supported between the pattern 15 and the disc 67 by means of an upright bearing 68 mounted upon the longitudinal slide 3. The longitudinal slide with the parts mounted thereon may during the working of the work piece advance approxi mately the length of the stud 17. producing sharp edged work pieces, the tool slide 7 is, after loosening the screws 56, first adjusted until the distance of thevaxis of rotation of the shaft 40 from the axis of rotation of the work piece bears the same ratio to the distance of the axis of rotation of the copying lever 19 from the axis of rotation of the pattern 15, as the length of the side of thesquare work piece to be produced to the length of the square pattern 65. The screws 56 are then tightened, and the tool holder 48 is gradually advanced until the work is finished.

It may be pointed out that the pattern 15 mounted upon the machine spindle may have any other desired shape, and must of course have as many studs as corners.

l/Vhile we have described the embodiments of our invention in great detail, we desire it to be understood that we do not desire to be limited to the exact details shown and described, as many changes may be made therein without departing from the spirit of our invention.

lVe claim 1. Mechanism for forming to a pattern, comprising a pattern-holder, a copying lever adapted to co-operate with the pattern, an oscillating shaft carrying th said lever, a cross-slide adapted to reciprocate together with the oscillating movements of the said copying lever, a roller mounted on the said lever so as to engage the pattern, a tool lever:

arm, a shaft carrying the said arm, a guideplate on the said oscillating shaft for transmitting the oscillating movements of the said copying lever to the said tool lever arm, a levermounted on the said shaft carrying the said tool lever arm, a slide mounted on the said guide-plate, and rods connecting the said slide with the said last named lever.

2. The mechanism as specified in claim 1, comprising a slide mounted on the shaft carrying the copying lever, a two-armed lever fixedly mounted on the shaft of the said tool lever arm and two connecting rods forming a parallelogram-like connection between the said slide and the said two-armed lever.

I 3. The mechanism as specified in claim 1, comprising a slide mounted on the shaft carrying the copying lever, a two-armed lever fixedly mounted on the shaft of the said tool lever arm and two connecting rods forming a parallelogram-like connection between the said slide and the said two-armed lever, and means for adjusting the points of connection of the said connecting rods at both ends of the said two-armed lever.

4. The mechanism as specified in claim 1, comprising a plurality of studs provided on When the front face of the pattern, the said studs In testimony whereof We have hereunto being arranged to cooperate with the said Set 11 h nds In the pres nce of WO -10 copyin lever and a spring for actuatin IleSSeS- the said copyinglever. b RUDOLF RYCHIGER.

5. The mechanism as specified in claim 1, ERNST KUPF ER. comprising a guide-plate fast on the shaft Witnesses: v of the said tool lever arm and a tool holder 7 A, BAILLEUX,

slidable on the said guide plate. R. HEINGARTNER. 

